National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Fair

53°F

12°C

Humidity 86%
Wind Speed SW 10 G 22 mph
Barometer 29.84 in (1010.6 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 14 Apr 7:56 pm EDT
Extended Forecast for

South Dennis MA

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 49. Southwest wind around 6 mph. Chance of precipitation is 20%.

    Low: 49 °F

    Slight Chance
    T-storms then
    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 65. South wind 5 to 8 mph.

    High: 65 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 46. West wind 3 to 6 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 46 °F

    Chance
    Showers and
    Patchy Fog

  • Thursday

    Thursday: Partly sunny, with a high near 57. Southwest wind 5 to 9 mph.

    High: 57 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers after 3am. Mostly cloudy, with a low around 49. Southwest wind around 6 mph. Chance of precipitation is 20%.

    Low: 49 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A chance of showers, mainly after 2pm. Partly sunny, with a high near 55. Southwest wind 5 to 7 mph becoming south in the afternoon. Chance of precipitation is 30%.

    High: 55 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers before 9pm. Mostly cloudy, with a low around 44. Light northeast wind. Chance of precipitation is 30%.

    Low: 44 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 51. Northeast wind 5 to 7 mph.

    High: 51 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 44. Light and variable wind.

    Low: 44 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 49. Southwest wind around 6 mph. Chance of precipitation is 20%.
Wednesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 65. South wind 5 to 8 mph.
Wednesday Night
A chance of showers and thunderstorms. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 46. West wind 3 to 6 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Partly sunny, with a high near 57. Southwest wind 5 to 9 mph.
Thursday Night
A slight chance of showers after 3am. Mostly cloudy, with a low around 49. Southwest wind around 6 mph. Chance of precipitation is 20%.
Friday
A chance of showers, mainly after 2pm. Partly sunny, with a high near 55. Southwest wind 5 to 7 mph becoming south in the afternoon. Chance of precipitation is 30%.
Friday Night
A chance of showers before 9pm. Mostly cloudy, with a low around 44. Light northeast wind. Chance of precipitation is 30%.
Saturday
Mostly cloudy, with a high near 51. Northeast wind 5 to 7 mph.
Saturday Night
Mostly cloudy, with a low around 44. Light and variable wind.
Sunday
A chance of showers after 3pm. Mostly cloudy, with a high near 57. South wind 5 to 10 mph. Chance of precipitation is 30%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 40. West wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 50. West wind around 10 mph, with gusts as high as 21 mph.
Monday Night
Partly cloudy, with a low around 33. Northwest wind around 8 mph.
Tuesday
Sunny, with a high near 47. Northwest wind around 9 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
4:00 pm EDT Apr 14, 2026
Forecast Valid:
8pm EDT Apr 14, 2026-6pm EDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation